IP Library › Assignment 018872/0723
Patent Assignment
Reel/Frame 018872/0723

Assignment of Assignor's Interest

Recorded: 2007-02-09 Pages: 4
Assignors
RUSSELL, MICHAEL KING
Executed: 2007-02-06
WALKER, COLIN
Executed: 2007-02-06
Assignee
RUSSELL OIL EXPLORATION LIMITED
LYNWORTH HOUSE, 54 HIGH STREET, PRESTBURY, CHELTENHEM, GL 52 3AU, UNITED KINGDOM
Covered Property (1)
Directional Drilling Control
Patent: 7,543,658 →
Application: 11/672,995 →
Publication: US 2007/0181343
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 28, 2015
From: RUSSELL OIL EXPLORATION LTD.
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 036899/0339 →